RFP vs RFQ vs EOI: The Definitive Comparison for Suppliers

The one-sentence differences

An RFQ (Request for Quotation) asks "how much" when the buyer already knows what they want.
An RFP (Request for Proposal) asks "how would you do this" when the buyer knows the outcome but wants suppliers to propose the solution.
An EOI (Expression of Interest) asks "are you capable and interested" as a first-round filter before either of the above.

Side-by-side comparison

When to expect an RFQ

Buyers use RFQs when the product or service is standardized enough that price is the only meaningful differentiator. Classic RFQ scenarios:

• Municipal fleet buying 50 identical vehicles to spec.
• Hospital procuring surgical gloves — brand + size + volume, quote your price.
• School district ordering laptops matching a specific SKU.

Suppliers spend little effort on RFQ responses — one page confirming compliance to spec, one page pricing, delivery terms. The buyer picks the lowest compliant quote and awards. Common in government micro-purchases and Simplified Acquisition Threshold buys.

When to expect an RFP

RFPs come out when the buyer knows the outcome they need but wants suppliers to propose how. Examples:

• "Design and build a new patient records system for our hospital network." Multiple valid architectures; buyer wants suppliers to propose.
• "Digital transformation consulting for our tax authority." Approach, team, methodology all matter.
• "Managed cybersecurity services with response SLAs." Multiple ways to structure the SOC.

RFPs demand serious response effort — executive summary, technical approach, team CVs, past-performance references, project plan, price. Scoring is a weighted mix of technical merit (often 50-70% of total) and price (30-50%). See our detailed how-to-bid guide for the full response structure.

When to expect an EOI

EOIs are pre-qualification filters. The buyer wants to size the addressable supplier market and shortlist a manageable number for the full competition. Common triggers:

• New project with unknown market capacity — buyer wants to see who's interested and qualified.
• High-complexity contract where a Restricted or Two-Stage procedure is being used.
• Framework agreement recruitment where the buyer wants a pre-qualified pool for future call-offs.

EOI responses are typically 5-15 pages: company overview, capability statement, relevant past experience, financial standing, key personnel bios. Selection criteria are usually pass/fail against minimum thresholds (turnover, insurance, past-project count), then top-N ranking to make the shortlist.

How the terminology varies by region

• United States: RFP, RFQ, RFI (Request for Information — similar to EOI), Sources Sought (early market research).
• United Kingdom: ITT (Invitation to Tender — similar to RFP), RFQ, Selection Questionnaire (SQ — similar to EOI).
• European Union: Contract Notice (open procedure = single-stage RFP; restricted procedure = EOI + RFP two-stage).
• India: RFP, RFQ, EOI all used; also "Notice Inviting Tender (NIT)".
• World Bank: REOI (Request for Expressions of Interest), RFP, Bid Document.
• Australia: RFT (Request for Tender = RFP), RFQ, EOI.

The names differ but the underlying document types are consistent. When entering a new market, map the local terminology to these three archetypes.

Deciding whether to respond

Response cost varies dramatically by document type. Rough rules of thumb:

• RFQ: 2-8 hours to respond. Almost always worth it if the spec matches your capabilities.
• RFP: 40-400 hours to respond depending on scope. Selective — see bid/no-bid framework.
• EOI: 8-40 hours to respond. Usually worth it as the effort is small and the payoff is entry to a shortlist.

The most common mistake: treating an RFP like an RFQ (undersized response, price-only) or an RFQ like an RFP (overengineered, priced-in cost of a proposal-team that killed the margin).

Where TenderYeti fits in

TenderYeti flags the document type on every indexed tender so you can filter your daily digest by RFP vs RFQ vs EOI and route each to the right internal owner (RFQs to the sales-ops desk; RFPs to a bid manager; EOIs to a business-development lead). See portal coverage or start a free trial.

Frequently asked questions